When you establish an MRC connection to a remote computer from the Network Browser in DRS, MRC does not save the authentication details for that client.
DameWare Mini Remote Control 9.0
When launched from DRS, MRC creates a temporary entry in the Saved Host List and marks the Use Current Logon Credentials option by default. You cannot change this option for temporary Saved Host List entries, and it clears any changes to the authentication details when you attempt to save the entry. This is a known issue and will be addressed in a future release.
Create a new (permanent) entry for the remote system that includes the appropriate authentication details: